Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Acura RSX L4-2.0L (VTEC)FACTORY OEM SERVICE PROCEDURE
How to End a Troubleshooting Session
NOTE: This is the only information provided by the manufacturer for clearing diagnostic trouble codes.
How to Reset the ECM/PCM
You can reset the ECM/PCM in either of two ways:
- Use the OBD II scan tool or Honda PGM Tester to clear the ECM/PCM memory.
See the OBD II scan tool or Honda PGM Tester user's manuals for specific instructions.
- Turn the ignition switch OFF, and remove the No.6 ECU (ECM/PCM) (15 A) fuse (A) from the under-hood fuse/relay box (B) for 10 seconds.
How to End a Troubleshooting Session (required after any troubleshooting)
1. Reset the ECM/PCM as described above.
2. Turn the ignition switch OFF.
3. Disconnect the OBD II scan tool or Honda PGM Tester from the DLC.
NOTE: The ECM/PCM is part of the immobilizer system. If you replace the ECM/PCM, it will have a different immobilizer code. In order for the engine to start, you must rewrite the immobilizer code with the Honda PGM Tester.
How to Reset the ECM/PCM
You can reset the ECM/PCM in either of two ways:
- Use the OBD II scan tool or Honda PGM Tester to clear the ECM/PCM memory.
See the OBD II scan tool or Honda PGM Tester user's manuals for specific instructions.
- Turn the ignition switch OFF, and remove the No.6 ECU (ECM/PCM) (15 A) fuse (A) from the under-hood fuse/relay box (B) for 10 seconds.
How to End a Troubleshooting Session (required after any troubleshooting)
1. Reset the ECM/PCM as described above.
2. Turn the ignition switch OFF.
3. Disconnect the OBD II scan tool or Honda PGM Tester from the DLC.
NOTE: The ECM/PCM is part of the immobilizer system. If you replace the ECM/PCM, it will have a different immobilizer code. In order for the engine to start, you must rewrite the immobilizer code with the Honda PGM Tester.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.